One of Molly Shannon‘s most popular “Saturday Night Live” characters of all time is Mary Katherine Gallagher, the socially awkward schoolgirl who “sticks [her] fingers under [her] arms and smells ’em like that.” During NBC’s latest “SNL” promo video (watch above), this week’s host tells cast member Ego Nwodim and musical guest Jonas Brothers that if they’re “nervous” to be working with her, all they need to do is follow her lead. Cut to everyone smelling their own armpits in synchronicity.

Shannon will host the Saturday, April 8 episode of NBC’s late night sketch comedy series. It’s her second time hosting the program after a 2007 episode with musical guest Linkin Park. Of course, Shannon got her big break on “Saturday Night Live” in 1995 as a regular cast member, staying for seven seasons until 2001. Some of her other popular characters were Sally O’Malley from various sketches, Helen Madden from “Pretty Living,...